<template>
  <div class="main">
    <a-form id="formLogin" class="user-layout-login" ref="formLogin" :form="form" @submit="handleSubmit">
      <a-tabs
        :active-key="customActiveKey"
        :tab-bar-style="{ textAlign: 'center', borderBottom: 'unset' }"
        @change="handleTabClick"
      >
        <a-tab-pane key="tab1" tab="账号密码登录">
          <a-alert
            v-if="isLoginError"
            type="error"
            show-icon
            style="margin-bottom: 24px;"
            message="账户或密码错误（admin/ant.design )"
          />
          <a-form-item>
            <a-input
              size="large"
              type="text"
              placeholder="账户: admin"
              v-decorator="[
                'username',
                {
                  rules: [{ required: true, message: '请输入帐户名或邮箱地址' }, { validator: handleUsernameOrEmail }],
                  validateTrigger: 'change', initialValue: 'admin'
                }
              ]"
            >
              <a-icon slot="prefix" type="user" :style="{ color: 'rgba(0,0,0,.25)' }" />
            </a-input>
          </a-form-item>

          <a-form-item>
            <a-input
              size="large"
              type="password"
              autocomplete="false"
              placeholder="密码: admin or ant.design"
              v-decorator="[
                'password',
                {
                  rules: [{ required: true, message: '请输入密码' }],
                  validateTrigger: 'blur', initialValue: 'admin'
                }
              ]"
            >
              <a-icon slot="prefix" type="lock" :style="{ color: 'rgba(0,0,0,.25)' }" />
            </a-input>
          </a-form-item>
        </a-tab-pane>
        <a-tab-pane key="tab2" tab="手机号登录">
          <a-form-item>
            <a-input
              size="large"
              type="text"
              placeholder="手机号"
              v-decorator="[
                'mobile',
                {
                  rules: [
                    {
                      required: true,
                      pattern: /^1[34578]\d{9}$/,
                      message: '请输入正确的手机号'
                    }
                  ],
                  validateTrigger: 'change'
                }
              ]"
            >
              <a-icon slot="prefix" type="mobile" :style="{ color: 'rgba(0,0,0,.25)' }" />
            </a-input>
          </a-form-item>

          <a-row :gutter="16">
            <a-col class="gutter-row" :span="16">
              <a-form-item>
                <a-input
                  size="large"
                  type="text"
                  placeholder="验证码"
                  v-decorator="[
                    'captcha',
                    {
                      rules: [{ required: true, message: '请输入验证码' }],
                      validateTrigger: 'blur'
                    }
                  ]"
                >
                  <a-icon slot="prefix" type="mail" :style="{ color: 'rgba(0,0,0,.25)' }" />
                </a-input>
              </a-form-item>
            </a-col>
            <a-col class="gutter-row" :span="8">
              <a-button
                class="getCaptcha"
                tabindex="-1"
                :disabled="state.smsSendBtn"
                @click.stop.prevent="getCaptcha"
                v-text="(!state.smsSendBtn && '获取验证码') || state.time + ' s'"
              />
            </a-col>
          </a-row>
        </a-tab-pane>
      </a-tabs>

      <a-form-item>
        <a-checkbox v-decorator="['rememberMe']">
          自动登录
        </a-checkbox>
        <router-link :to="{ name: 'recover', params: { user: 'aaa' } }" class="forge-password" style="float: right;">
          忘记密码
        </router-link>
      </a-form-item>

      <a-form-item style="margin-top:24px">
        <a-button
          size="large"
          type="primary"
          html-type="submit"
          class="login-button"
          :loading="state.loginBtn"
          :disabled="state.loginBtn"
        >
          确定
        </a-button>
      </a-form-item>

      <div class="user-login-other">
        <span>其他登录方式</span>
        <a>
          <a-icon class="item-icon" type="alipay-circle" />
        </a>
        <a>
          <a-icon class="item-icon" type="taobao-circle" />
        </a>
        <a>
          <a-icon class="item-icon" type="weibo-circle" />
        </a>
        <router-link class="register" :to="{ name: 'register' }">
          注册账户
        </router-link>
      </div>
    </a-form>

    <two-step-captcha
      v-if="requiredTwoStepCaptcha"
      :visible="stepCaptchaVisible"
      @success="stepCaptchaSuccess"
      @cancel="stepCaptchaCancel"
    />
  </div>
</template>

<script lang="ts">
import { Component, Prop, Vue } from 'vue-property-decorator'
import { Action } from 'vuex-class'
import md5 from 'md5'
import TwoStepCaptcha from '@/components/tools/TwoStepCaptcha.vue'
import { timeFix } from '@/utils/util'
import { getSmsCaptcha, get2step } from '@/api/login'
import { LoginState } from '@/interfaces/service-interface'

@Component({
  components: { TwoStepCaptcha }
})
export default class Login extends Vue {
  @Action('Login')
  Login: any
  @Action('Logout')
  Logout: any

  // data
  private customActiveKey: string = 'tab1'
  private loginBtn: boolean = false
  // login type: 0 email, 1 username, 2 telephone
  private loginType: number = 0
  private isLoginError: boolean = false
  private requiredTwoStepCaptcha: boolean = false
  private stepCaptchaVisible: boolean = false
  private form: any
  private state: LoginState = {
    time: 60,
    loginBtn: false,
    // login type: 0 email, 1 username, 2 telephone
    loginType: 0,
    smsSendBtn: false
  }

  constructor() {
    super()
  }

  // Lifecycle
  beforeCreate() {
    this.form = this.$form.createForm(this)
  }

  created() {
    get2step({})
      .then(res => {
        const reponse = res as any
        this.requiredTwoStepCaptcha = reponse.result.stepCode
      })
      .catch(() => {
        this.requiredTwoStepCaptcha = false
      })
    // this.requiredTwoStepCaptcha = true
  }

  // methods
  private handleUsernameOrEmail(_rule: any, value: string, callback: Function) {
    const { state } = this
    const regex = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})$/
    if (regex.test(value)) {
      state.loginType = 0
    } else {
      state.loginType = 1
    }
    callback()
  }

  private handleTabClick(key: string) {
    this.customActiveKey = key
    // this.form.resetFields()
  }

  private handleSubmit(e: any) {
    e.preventDefault()
    const {
      form: { validateFields },
      state,
      customActiveKey,
      Login
    } = this

    state.loginBtn = true

    const validateFieldsKey = customActiveKey === 'tab1' ? ['username', 'password'] : ['mobile', 'captcha']

    validateFields(validateFieldsKey, { force: true }, (err: any, values: any) => {
      if (!err) {
        console.log('login form', values)
        const loginParams = { ...values }
        delete loginParams.username
        loginParams[!state.loginType ? 'email' : 'username'] = values.username
        loginParams.password = md5(values.password)
        Login(loginParams)
          .then((res: any) => this.loginSuccess(res))
          .catch((err: any) => this.requestFailed(err))
          .finally(() => {
            state.loginBtn = false
          })
      } else {
        setTimeout(() => {
          state.loginBtn = false
        }, 600)
      }
    })
  }

  private getCaptcha(e: Event) {
    e.preventDefault()
    const {
      form: { validateFields },
      state
    } = this

    validateFields(['mobile'], { force: true }, (err: any, values: any) => {
      if (!err) {
        state.smsSendBtn = true

        const interval = window.setInterval(() => {
          if (state.time-- <= 0) {
            state.time = 60
            state.smsSendBtn = false
            window.clearInterval(interval)
          }
        }, 1000)

        const hide: Promise<any> = this.$message.loading('验证码发送中..', 0)
        getSmsCaptcha({ mobile: values.mobile })
          .then(res => {
            const reponse = res as any
            setTimeout(() => hide, 2500)
            this.$notification['success']({
              message: '提示',
              description: '验证码获取成功，您的验证码为：' + reponse.result.captcha,
              duration: 8
            })
          })
          .catch(err => {
            setTimeout(() => hide, 1)
            clearInterval(interval)
            state.time = 60
            state.smsSendBtn = false
            this.requestFailed(err)
          })
      }
    })
  }

  private stepCaptchaSuccess() {
    this.loginSuccess()
  }

  private stepCaptchaCancel() {
    this.Logout().then(() => {
      this.loginBtn = false
      this.stepCaptchaVisible = false
    })
  }

  private loginSuccess(res?: any) {
    // check res.homePage define, set $router.push name res.homePage
    // Why not enter onComplete
    /*
      this.$router.push({ name: 'analysis' }, () => {
        console.log('onComplete')
        this.$notification.success({
          message: '欢迎',
          description: `${timeFix()}，欢迎回来`
        })
      })
      */
    this.$router.push({ path: '/' })
    // 延迟 1 秒显示欢迎信息
    setTimeout(() => {
      this.$notification.success({
        message: '欢迎',
        description: `${timeFix()}，欢迎回来`
      })
    }, 1000)
    this.isLoginError = false
  }

  private requestFailed(err: any) {
    this.isLoginError = true
    this.$notification['error']({
      message: '错误',
      description: ((err.response || {}).data || {}).message || '请求出现错误，请稍后再试',
      duration: 4
    })
  }
}
</script>

<style lang="less" scoped>
.user-layout-login {
  label {
    font-size: 14px;
  }

  .getCaptcha {
    display: block;
    width: 100%;
    height: 40px;
  }

  .forge-password {
    font-size: 14px;
  }

  button.login-button {
    padding: 0 15px;
    font-size: 16px;
    height: 40px;
    width: 100%;
  }

  .user-login-other {
    text-align: left;
    margin-top: 24px;
    line-height: 22px;

    .item-icon {
      font-size: 24px;
      color: rgba(0, 0, 0, 0.2);
      margin-left: 16px;
      vertical-align: middle;
      cursor: pointer;
      transition: color 0.3s;

      &:hover {
        color: #1890ff;
      }
    }

    .register {
      float: right;
    }
  }
}
</style>
